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Optical Engineering

Packetized Video On MAGNET
Author(s): Aurel A. Lazar; John S. White
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Paper Abstract

Theoretical analysis of integrated local area network model of MAGNET, an integrated network testbed developed at Columbia University, shows that the bandwidth freed up during video and voice calls during periods of little movement in the images and periods of silence in the speech signals could be utilized efficiently for graphics and data transmission. Based on these investigations, an architecture supporting adaptive protocols that are dynamicaly controlled by the requirements of a fluctuating load and changing user environment has been advanced. To further analyze the behavior of the network, a real-time packetized video system has been implemented. This system is embedded in the real-time multimedia workstation EDDY, which integrates video, voice, and data traffic flows. Protocols supporting variable-bandwidth, fixed-quality packetized video transport are described in detail.

Paper Details

Date Published: 1 July 1987
PDF: 7 pages
Opt. Eng. 26(7) doi: 10.1117/12.7974123
Published in: Optical Engineering Volume 26, Issue 7
Show Author Affiliations
Aurel A. Lazar, Columbia University (United States)
John S. White, Columbia University (United States)

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